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Science | Transportation | Engines & Equipment

Engines and construction equipment are all complex machines. How do some of these engines work, and how do they help us construct buildings and structures?


 How does a catapult work?

How does the ancient catapult work? It doesn't seem like twisted rope and wooden gears or levers would be able to get up the speed to launch heavy loads a great distance. See more »

 How does a water-cooled air conditioner work?

How does a water-cooled air conditioner work? See more »

What is a tank engine, as in Thomas the Tank Engine?

 What is a tank engine, as in Thomas the Tank Engine?

You may have heard about 'Thomas the Tank Engine.' But what is a tank engine exactly? Find out. See more »

 How do the engines breathe in diesel submarines?

How do the engines breathe in diesel submarines? Don't internal combustion engines need a lot of oxygen to run? Where would all of this oxygen come from when the sub is underwater? See more »

 What force causes a 3-pole motor to spin one way and not the other?

What causes a 3-pole motor to spin one way and not the other? Visit HowStuffWorks to discover what happens with a 3-pole motor. See more »

 How does a hydraulic ram pump work?

When I was a kid, my Aunt had constantly flowing water from a natural spring down the hill. She said the water was pumped uphill using a hydraulic ram. This device ran constantly and didn't need any electricity! What is a hydraulic ram and how does it work? See more »

 How are people able to breathe inside a submarine?

How are people able to breathe inside a submarine? What do they do to keep the air breathable? See more »

How Hydraulic Machines Work

 How Hydraulic Machines Work

Hydraulic machines do most of the heavy hauling and lifting on most construction projects. Learn about hydraulic machines and types of hydraulic machines. See more »

Inside a Competition Tractor

 Inside a Competition Tractor

A competition tractor is a modified tractor that is used in tractor pull races. Check out pictures of the inside of a competition tractor. See more »

How a Block and Tackle Works

 How a Block and Tackle Works

A fascinating article that describes how a block and tackle (as well as levers and gears) works! See more »